Godlike Productions - Discussion Forum
Users Online Now: 2,120 (Who's On?)Visitors Today: 266,352
Pageviews Today: 572,751Threads Today: 311Posts Today: 3,982
10:14 AM


Rate this Thread

Absolute BS Crap Reasonable Nice Amazing
 

Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself

 
Goldenfire
12/19/2004 02:48 AM
Report Abusive Post
Report Copyright Violation
Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself

by Earle Holland
Columbus OH (SPX) Dec 16, 2004

Glaciologist Lonnie Thompson worries that he may have found clues that show history repeating itself, and if he is right, the result could have important implications to modern society.
Thompson has spent his career trekking to the far corners of the world to find remote ice fields and then bring back cores drilled from their centers. Within those cores are the records of ancient climate from across the globe.

From the mountains of data drawn by analyzing countless ice cores, and a meticulous review of sometimes obscure historic records, Thompson and his research team at Ohio State University are convinced that the global climate has changed dramatically.

But more importantly, they believe it has happened at least once before, and the results were nearly catastrophic to emerging cultures at the time. He outlined his interpretations and fears today at the annual meeting of the American Geophysical Union in San Francisco.

A professor of geological sciences at Ohio State and a researcher with the Byrd Polar Research Center, Thompson points to markers in numerous records suggesting that the climate was altered suddenly some 5,200 years ago with severe impacts.

He points to perfectly preserved plants he discovered that recently emerged from the Quelccaya ice cap in the Peruvian Andes as that glacier retreats. This monstrous glacier, some 551 feet (168 meters) deep, has shown an exponentially increasing rate of retreat since his first observations in 1963.

The plants were carbon-dated to determine their age and tests indicated they had been buried by the ice for perhaps 5,200 years. That suggests that somehow, the climate had shifted suddenly and severely to capture the plants and preserve them until now.

In 1991, hikers found the preserved body of a man trapped in an Alpine glacier and freed as it retreated. Later tests showed that the human – dubbed Oetzi – became trapped and died around 5,200 years ago.

Thompson points to a study of tree rings from Ireland and England that span a period of 7,000 years. The point in that record when the tree rings were narrowest – suggesting the driest period experienced by the trees – was approximately 5,200 years ago.

He points to ice core records showing the ratio of two oxygen isotopes retrieved from the ice fields atop Africa’s Mount Kilimanjaro. A proxy for atmospheric temperature at the time snow fell, the records are at their lowest 5,200 years before now.

He lists the shift by the Sahara Desert from a habitable region to a barren desert; major changes in plant pollen uncovered from lakebed cores in South America, and the record lowest levels of methane retrieved from ice cores from Greenland and Antarctica and all occurred at the same time – 5,200 years ago.

"Something happened back at this time and it was monumental," Thompson said. "But it didn’t seem monumental to humans then because there were only approximately 250 million people occupying the planet, compared to the 6.4 billion we now have.

"The evidence clearly points back to this point in history and to some event that occurred. It also points to similar changes occurring in today’s climate as well," he said.

"To me, these are things we really need to be concerned about." The impact of a climate change of that magnitude on a modern world would be tremendous, he said. Seventy percent of the population lives in the world’s tropics and major climate changes would directly impact most of them.

Thompson believes that the 5,200-year old event may have been caused by a dramatic fluctuation in solar energy reaching the earth. Scientists know that a historic global cooling called the Little Ice Age, from 1450 to 1850 A.D., coincided with two periods of decreased solar activity.

Evidence shows that around 5,200 years ago, solar output first dropped precipitously and then surged over a short period. It is this huge solar energy oscillation that Thompson believes may have triggered the climate change he sees in all those records.

"The climate system is remarkably sensitive to natural variability," he said. "It’s likely that it is equally sensitive to effects brought on by human activity, changes like increased greenhouse gases, altered land-use policies and fossil-fuel dependence.

"Any prudent person would agree that we don’t yet understand the complexities with the climate system and, since we don’t, we should be extremely cautious in how much we ‘tweak’ the system," he said.

"The evidence is clear that a major climate change is underway."
[link to www.spacedaily.com]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

So the debate rages onward: human´s are solely responsible for the global warming, or this is a somewhat normal event that may or may not be accelerating? book
~Marianne~
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
very interecting article Golden.. I believe it to be both actually.
Leia
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Great article, Goldenfire.

One of the best I´ve seen on GLP for quite a while!

I tend to agree w/ Marianne . . . both.
Goldenfire
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Thanks both of you.

We hear so much about Global warming, but I have always wondered how such sweeping pronouncements could be made as it has been studied for so short a time.
Leia
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
I´m always interested in climate change articles/stories/links.

I´ve been "researching" collembola here and there and the fact that there are human collembola infestations cropping up in different parts of the world.

I found it interesting that collembolae and their activities are one of the "signs" of climate change!
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
a huge comet plunged into Sun 5,200 Years Ago caused Major Climate Change
~Marianne~
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Leia nice to see you, haven´t seen you in some time.. how is your son?

(sorry to sidetrack G)
Goldenfire
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
"a huge comet plunged into Sun 5,200 Years Ago caused Major Climate Change"

AC 3:12, where did you hear that?
Leia
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Hi M -

Nice to see you, too.

He is still living with his dad and stepmom however I believe the "honeymoon" is over.

He is now 16 - will be 17 March 1 - and 6´2" or 6´3".

My biggest worry - that his grades would falter - has, indeed come true. Sigh.

M - how is your daugher?

Leia
Goldenfire
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Leia, I didn´t know that. What started you off on that track?
~Marianne~
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
collembola.. what is that Leia?

my baby is fine, sorry to hear about your son´s grades
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
I think it is a simple cell plant.
John Birch (Naked)
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Goldie,

The fossil-isotopic-historic-record shows that Global Warming trends, as we know them to be, started hundreds of years ago, well before the present man-made Industrial Age. And that Global Warming coincides exactly with the record of sun-spot/solar-flare increased activity over the millenium, plus that the mini-ice-age coincided with a sudden drop in sun-spot/solar-flare activity.

To allude that mankind is in any way even remotely responsible for Global Warming is ludicrously giving mankind credit for doing that which he is incapable of doing. It would be comparable to Ants and the Insect Kingdom being credited with building the Hoover Dam.

Now, mankind is very capable of causing
Nuclear Winter and therefore the possibility of the onset of a new Ice Age, but Global Warming? Give me a break! We could never burn enough fossil fuels to cause the Earth to over-heat.
We,(the Earth),are a self-cleaning-closed-system.
With a weather machine that corrects and repairs and cleans itself quite regularly.

The sun,Sol,is the powerhouse in our Solar Sytem; the mover and the shaker of our Earth, not mankind!

Johnshroom
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
OMG! A discussion on GLP. This is so cool!
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Cool article Golden. You find some good ones.smooch
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Climate change is not a matter of "if" but of "when".
Odds are it won´t happen in any of our life times though.
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
There was The Catastrophe circa 5000 years ago. It disrupted not only weather, but the geology of Earth. A Jewish tale claims that Catastrophe was caused when God sent 2 stars from The Pleiades towards Earth. The harbinger event appears to have been that the Sun darkened for several days and after that is when men saw 2 new fiery objects in the heavens.

Since then til now history is replete with accounts of changing weather patterns, floods and famine. All changes appear to be related to what happens at the Sun.

We are experiencing what seems to be an electronics storm at the Sun which heats-up all the planets in its capture, including Earth. Global warming is real; but it is not caused by so-called Greenhouse gases.

What does it mean; what is it harbinger to; are the type of questions which need answers.
Whiterabbit
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Why worry its as it should be...without going where im not allowed to ...it ties in with the 5000 yr bible creationist thing , trust your heart of hearts its all good, man is so full of himself to think hes had a hand in it...dont ask more... just trust, do you know that you are not to fear god ,for the original word was mistranslated and it really means to trust...
X x x
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Bump for you, marianne
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
Yeah, I got laid back then also.

I still carry a condom in my wallet just is case.
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
"Any prudent person would agree that we don’t yet understand the complexities with the climate system and, since we don’t, we should be extremely cautious in how much we ‘tweak’ the system," he said.
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
The 5,200 year ago shift was caused by planet X. There was also a more minor change 3,500 years ago during the Exodus of the Bible that caused some major earth changes. We may be in for a rough time in a few hundred years when Planet X comes by again.
Sireen
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
All I know is it´s cold as HELL outside and I´m NOT diggin it!
Anonymous Coward
12/08/2005 10:10 AM
Report Abusive Post
Report Copyright Violation
Re: Major Climate Change Occurred 5,200 Years Ago: History Could Repeat Itself
john birch,

"Contrails are one change in the Earth´s system that are without a doubt caused by human activity," said Lin Chambers, director of the GLOBE Contrail Education Project at NASA´s Langley Research Center in Hampton, Virginia.

Contrails increase Earth´s cloudiness while impacting the atmosphere and climate. Observations in the United States and around the globe may help scientists better understand the atmospheric conditions that enable the formation of contrails.





GLP